The+Sun+and+Our+Solar+System

E.L.A
= **__The Sun and Our Solar System__**  =

 The sun and the universe is something we look at everyday, but there are many interesting things that you may not know. The sun is much bigger then you would imagine. When you look at it, it looks very small and round, but if you were to actually go to space and look at it, you would see a huge round ball that has explosions, and you can see flames bursting out of it, but the gravitational force ends up coming back into the sun.

**__What is the sun?__**

Even though the sun is a medium sized star, if it were hollow inside, millions of Earth’s would be able to fit inside of it. The sun is at the center of our universe and is very important. It is a star that gives light and heat to other planets. It is made out of atoms like every other star in the universe. Some elements that the sun has inside of it are hydrogen, iron, oxygen and neon.

**__What does the sun give to the earth and other planets? How does it affect them?__**

 What the sun gives to the Earth and other planets is light and heat. Without the light and heat of the sun, the Earth and other planets will be very cold and dark. What that would do to the earth is that it will kill us. We need food to eat and we can’t have that, because all the plants and animals will die of the temperature. That will be really bad, because we need the plants and animals for food. What that would do to other planets is that it will stop them from having any chances of having life on them, even though they already have things that are stopping them from having that.

The way the sun affects different planets is by the distance away from the sun they are. The sun gives more heat to the inner planets (Mercury, Venus, Earth, and Mars) then the outer planets (Jupiter, Saturn, Uranus, and Neptune). The planet the sun gives the most heat to be Mercury. The temperatures in Mercury can go all the way up to 890 degrees Fahrenheit, and as cold as -290 degrees Fahrenheit at night.

**__The suns gravitational pull__**

 What makes the planets rotate around the sun is the suns gravitational pull. What makes the planets go around the sun and not in just any random direction is because “Earth has a velocity in the direction perpendicular to the force of the sun’s pull. If the sun weren’t there, the Earth would have traveled in a straight line, but the gravity of the sun alters its course, causing it to travel around the sun in a shape very near to a circle”.

**__Things in common and differences that the sun and the Earth have.__**

 The things that the Earth and the sun have in common are that they are both in the same solar system. The sun is the star that the earth orbits around. Things that the sun and the Earth have in difference are that the Earth is a planet and the sun is a star. The sun is extremely bigger then the Earth even if it is only a medium sized star.

**__Why is it that the Earth may be the only planet with life on it?__**

The reason that the Earth may be the only planet with life on it is because Earth has the right things so that you can have life. For example the Earth has the correct temperatures that you would need to have life on Earth in the day and at night. Also you need oxygen to live, and other planets don’t have that. The last thing that some planets don’t have so that they can have life on their planet is water. Life needs water to start living and almost all other planets don’t have that.

**__The different sections of the sun__**

 The sun has six different sections. One section is the photosphere and that section is the intensely luminous part of the sun. The second section of the sun is the core and that section is basically the inside part of the sun. The third section would be radiative zone and that part is between in thee inner core and the outer core of the sun. What the radiative zone is generated by is nuclear fusion. The fourth section of the sun is the convective zone, that section is located a little farther away from the radiative zone and what it does is that it causes convective motions. The fifth section of the sun is the corona, and that section is the outer atmosphere of the sun. The last section of the sun is called the chromo sphere, that section of the sun is just the red glow you can see on the sun, that area contains many different types of gasses.

Sometimes it’s good to know that the sun isn’t just a big ball that is yellow and makes u hot, because now you know more about what the sun is, and that we wouldn’t be able to live without it. Another thing you learned a little about is how the sun can affect different kinds of planets and some reasons they do not have life on it.

 **__Refrences__** 1.) "Curious About Astronomy: Why Do the Planets Orbit the Sun?" Curious About Astronomy? Ask an Astronomer. Web. 31 Jan. 2011. .

2.) "The Solar System: The Sun, Planets, Dwarf Planets, Moons, Asteroids, Comets, Meteors, and Solar System Formation." Windows to the Universe. Web. 31 Jan. 2011. .

3.) “We can use the sun from both sides now.” USA Today [Magazine] Aug. 2006: 6t. General OneFile Web. 21 Dec. 20. 2010

4.) Simon, Seymour ,The Sun. New York . NY: William Morrow, 1986

5.) "Sun." Views of the Solar System. Web. 01 Feb. 2011. .

6.) Get the Full Picture on Any Topic. Web. 01 Feb. 2011. .